The teacher spoke of some writers and some books ________ we need to know.
Our teacher said there would be ______ books in the new library.
I think there will be ______pollution and ______ cars in the future.
—I am sorry I _______ my exercise book at home.— Don’t forget _______ it to school tomorrow.
—Have a great time at the dinner party!—______.
—Peter, are you going fishing tomorrow? —Yes. But I ______ at home if it ______.